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Thread: Resistance

  1. #1 Resistance 
    Forum Masters Degree thyristor's Avatar
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    How do I calculate the temperature of a material when I know its resistance?


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  3. #2 Re: Resistance 
    . DrRocket's Avatar
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    Quote Originally Posted by thyristor
    How do I calculate the temperature of a material when I know its resistance?
    Ihave never heard of a calculation per se being done, though I suppose that a really good solid state physicist might be able to come up with a means to do that.

    In practice one generally has to calibrate a device and apply an empirical equation, or simply develop a table of resistance vs temperature. These devices go under the acronym of RTD.

    http://www.omega.com/temperature/Z/pdf/z033-035.pdf


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  4. #3  
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    A very rough rule of thumb is that the resistivity of most common metals will go up by about 0.4% per degree as you heat it. But that's only helpful if you already know the resistivity.
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